Rajabiani A1, Aaliepour A2, Tavangar M3, Meysamie AP4 1. Assistant Professor, Department of Pathology, Faculty of medicine, Tehran University of Medical Sciences 2. Resident, Department of Pathology, Faculty of medicine, Tehran University of Medical Sciences 3. Associate Professor, Department of Pathology, Faculty of medicine, Tehran University of Medical Sciences 4. Assistant Professor, Depar...

Recent research in the design of filter banks has shown that nonorthogonal filter banks can potentially provide higher coding gains over orthogonal filter banks. The use of non-orthogonal filter banks, however, poses a difficulty in the quantization of subband signals. The conventional nearest-neighbor (NN) encoding rule for the quantization of subband signals is no longer optimal. In this pape...

This paper introduces two new numerical methods for integration of stiff ordinary differential equations. Following the idea of quantization based integration, i.e., replacing the time discretization by state quantization, the new methods perform first and second order backward approximations allowing to simulate stiff systems. It is shown that the new algorithms satisfy the same theoretical pr...

In this paper we discuss two approaches to anomaly-free quantization of a two-dimensional string. The first approach is based on the canonical Dirac prescription of quantization of degenerated systems. At the second approach we ”weaken” the Dirac quantization conditions requiring the solving of first class constraints only in the sense of mean values. At both approaches there are no states with...

This paper introduces two new numerical methods for integration of stiff ordinary differential equations. Following the idea of quantization based integration, i.e., replacing the time discretization by state quantization, the new methods perform first and second order backward approximations allowing to simulate stiff systems. It is shown that the new algorithms satisfy the same theoretical pr...

Systems with constraints pose problems when they are quantized. Moreover, the Dirac procedure of quantization prior to reduction is preferred. The projection operator method of quantization, which can be most conveniently described by coherent state path integrals, enables one to directly impose a regularized form of the quantum constraints. This procedure also overcomes conventional difficulti...

| The nonlinear recursive di erence equations of second order bandpass Delta-Sigma modulator with sinusoidal inputs are solved. The results indicate that quantization error is neither uniformly distributed nor white. The autocorrelation of quantization error is symmetric but does not vanish as correlation index increased. The study of crosscorrelation between quantization error and sinusoidal i...

We consider an approach in which the usual wave function quadrature representation of mode j electromagnetic field is further quantized to produce a operator. Since already second quantized, this corresponds additional or third quantization. The third-quantization can be used perform certain quantum optics calculations Heisenberg picture that could only performed Schrodinger when using conventi...